| D.K Enterprizes Limited | Real estate | 2023 |
| D.L. Moore Insurance Services Limited | Financial services | 2010 |
| D3 Agentic Limited | Information & communication | 2026 |
| DA Dental Laboratory Solutions Ltd | Manufacturing | 2019 |
| DAB Drylining Ltd | Construction | 2019 |
| Dabaj Construction Services Ltd | Construction | 2025 |
| DAC Building Network Ltd | Construction | 2024 |
| Dacam Construction Ltd | Construction | 2019 |
| Dacia Properties Ltd | Real estate | 2024 |
| Daisleybuildconsult Ltd | Construction | 2024 |
| Dakora Consulting Limited | Wholesale & retail | 2016 |
| Dalchini Spice Limited | Hospitality | 2013 |
| Dale Lavender Limited | Hospitality | 2020 |
| Dalling & Co. Wines Limited | Hospitality | 2010 |
| Damachi Properties Ltd | Real estate | 2021 |
| Damian Thurston Photography Ltd | Professional & scientific | 2006 |
| DAN Stark Industries Ltd | Financial services | 2026 |
| Daneswood Management Limited | Households | 1983 |
| Dania Transport Ltd | Transport & logistics | 2025 |
| Daniel D'Costa Ltd | Construction | 2015 |
| Daniel Fursow Service Ltd | Transport & logistics | 2019 |
| Daniel James Watches Limited | Wholesale & retail | 2023 |
| Daniel Lupancu Limited | Construction | 2026 |
| Daniel Pirlogea Limited | Other services | 2025 |
| Daniel Preda Limited | Transport & logistics | 2022 |
| Daniel Wilson Software Ltd | Information & communication | 2026 |
| Dannpubs Limited | Hospitality | 2022 |
| Danny Drive Limited | Construction | 2026 |
| Dany Child Care Limited | Health & social care | 2022 |
| Danyells Consulting Limited | Professional & scientific | 2015 |
| Danyells Foods Ltd | Wholesale & retail | 2025 |
| Darbar FC Ltd | Hospitality | 2020 |
| Dariushgvuk Ltd | Transport & logistics | 2026 |
| Darren’S Tidy Builders Ltd | Construction | 2023 |
| Darson Management Ltd | Construction | 2021 |
| Darwin Ventures Limited | Administrative & support | 2015 |
| Datalec Solutions Ltd | Construction | 2025 |
| Datchet Hospitality Limited | Hospitality | 2014 |
| Datlec Solutions Ltd | Construction | 2020 |
| Dave Judge Limited | Information & communication | 2019 |
| Davi Solutions Ltd | Construction | 2025 |
| David BM Limited | Transport & logistics | 2023 |
| David Dougherty Building Services Ltd | Construction | 2026 |
| David Powell Films Limited | Information & communication | 2014 |
| David S Transport Ltd | Transport & logistics | 2021 |
| David Schwellen Ltd | Administrative & support | 2011 |
| Davids Timber Ltd | Wholesale & retail | 2018 |
| Davinton Limited | Real estate | 2024 |
| Davis Electrical Contractors Limited | Construction | 2021 |
| Dawid A.P Projects Limited | Professional & scientific | 2022 |
| Daynell Parcel Distribution Ltd | Transport & logistics | 2015 |
| Daze Handyman Services Ltd | Construction | 2026 |
| DBS (AJ) Ltd | Manufacturing | 2021 |
| DBS London Ltd | Manufacturing | 2020 |
| DC Grab Hire Ltd | Transport & logistics | 2023 |
| DC Rail & Civil Engineering Ltd | Construction | 2016 |
| DCM Heating & Constructions Ltd | Construction | 2018 |
| DD Brothers PVT Ltd | Wholesale & retail | 2026 |
| DD Contracts Ltd | Construction | 2012 |
| DDM Capital Limited | Financial services | 2023 |
| DDM Trans Logistics Ltd | Transport & logistics | 2025 |
| DDS Build Ltd | Real estate | 2025 |
| DDY Investment Limited | Real estate | 2024 |
| De-Baks Company Limited | Construction | 2024 |
| Deakin-White Limited | Real estate | 2015 |
| Dealt Software Solutions Limited | Information & communication | 2025 |
| Dean Toms Consultancy Limited | Construction | 2024 |
| Deca Engineering Ltd | Construction | 2019 |
| Decam Electronics Limited | Manufacturing | 2009 |
| Decent Screeding Contractor Ltd | Construction | 2020 |
| Decor Facades Ltd | Construction | 2016 |
| Dedicated Courier Services Ltd | Transport & logistics | 2024 |
| Deeanjay Limited | Professional & scientific | 2017 |
| Deegees Consults and Services Limited | Education | 2025 |
| Deep Green Water Ltd | Professional & scientific | 2018 |
| Deer Lotus Ltd | Wholesale & retail | 2025 |
| Dehyar Limited | Health & social care | 2025 |
| Deighton Flavours Limited | Hospitality | 2019 |
| Deli Divine Limited | Hospitality | 2023 |
| Delish Dining Ltd | Hospitality | 2025 |
| Delta Choice Limited | Hospitality | 2026 |
| Delta Internal Solutions Ltd | Construction | 2018 |
| Deltaleaf Ltd | Information & communication | 2014 |
| Delucas Deli Limited | Hospitality | 2024 |
| Denedo Property Services Limited | Real estate | 2018 |
| Denedo Services Ltd | Other services | 2011 |
| Denote Studio Ltd | Professional & scientific | 2021 |
| Dens Properties Ltd | Real estate | 2025 |
| Dental International Laboratories Limited | Health & social care | 1987 |
| Denton Hill Limited | Hospitality | 2022 |
| Dermiracle Limited | Health & social care | 2026 |
| Desi Chaat Junction Limited | Hospitality | 2026 |
| Designflooringsolutions Limited | Construction | 2025 |
| Desilva Estates Ltd | Real estate | 2020 |
| Desi’S Build Ltd | Construction | 2022 |
| Dessauer Direct Limited | Professional & scientific | 2007 |
| Detail Clean Limited | Administrative & support | 2025 |
| Detail Gardening and Maintenance Trading AS Detail Clean Limited | Administrative & support | 2017 |
| Deurali Trading Limited | Hospitality | 2017 |
| Devidu Freehold Limited | Real estate | 2022 |